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I got this regexp from google which is for matching specific glyphs in vim-nerdtree.

autocmd FileType nerdtree syntax match {hl-group} /\v{glyph}/ containedin=ALL

But obviously it won't work on custom statusline/tabline. What events should I use for it to work?

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The :syntax command only covers actual buffer contents. Both statusline and (terminal) tabline, though displayed with the same font and highlighting possibilities as the windows that contain buffer contents, are different: They belong to the editor UI elements.

The main reason for syntax highlighting is highlighting parts of the text with different colors or text attributes, through highlight groups. For the tabline, there's a fixed set of highlight groups (:help setting-tabline), for the statuslines there are two different groups for active and inactive (:help hl-StatusLine). Inside both, you can include 9 different user highlightings via the %1*...%* items, cp. :help hl-User1..9.

You cannot use this for concealing characters, but this can be done by including a custom Vimscript expression (%{...}) and translating / removing the characters in there.

  • For the tabline, you can use the full highlighting options as for the statusline, if you use a text based tabline (e.g. :set guioptions-=e) – Christian Brabandt Nov 12 '18 at 10:39
  • Thanks @ChristianBrabandt, I had missed that! Nice that this actually is consistent; I've adapted my answer. – Ingo Karkat Nov 12 '18 at 10:58
  • I forgot to mention I'm using terminal vim – John Fred Fadrigalan Nov 13 '18 at 5:35
  • @JohnFredFadrigalan: That's already considered by the answer. – Ingo Karkat Nov 13 '18 at 7:28

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